//package com.bwie.filter;
//
//import io.jsonwebtoken.Claims;
//import io.jsonwebtoken.Jwts;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.cloud.gateway.filter.GatewayFilterChain;
//import org.springframework.cloud.gateway.filter.GlobalFilter;
//import org.springframework.context.annotation.Configuration;
//import org.springframework.core.Ordered;
//import org.springframework.data.redis.core.StringRedisTemplate;
//import org.springframework.http.HttpStatus;
//import org.springframework.http.server.reactive.ServerHttpRequest;
//import org.springframework.http.server.reactive.ServerHttpResponse;
//import org.springframework.web.server.ServerWebExchange;
//import reactor.core.publisher.Mono;
//
//import java.util.concurrent.TimeUnit;
//
//@Configuration
//public class MyFilter implements GlobalFilter, Ordered {
//    @Autowired
//    StringRedisTemplate stringRedisTemplate;
//    /**
//     * 网关全局过滤器
//     * @param exchange
//     * @param chain
//     * @return
//     */
//    @Override
//    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
//        //获取参数
//        ServerHttpRequest request = exchange.getRequest();
//        ServerHttpResponse response = exchange.getResponse();
//        String url = request.getURI().getPath();
//        System.out.println("url"+url);
//
//        //白名单
//        if(url.contains("/login") || url.contains("/sendCode")){
//            System.out.println("白名单" +url);
//            return chain.filter(exchange);
//        }
//        //检查token
//        String token = request.getHeaders().getFirst("token");
//        if (token ==null){
//            System.out.println("token为空"+url);
//            response.setStatusCode(HttpStatus.UNAUTHORIZED);
//            return response.setComplete();
//        }
//        Claims body = Jwts.parser().setSigningKey("123456").parseClaimsJws(token).getBody();
//        Integer userId = body.get("userId", Integer.class);
//        String tokenKey = "token-"+userId;
//        String redisToken = stringRedisTemplate.opsForValue().get(tokenKey);
//        if(redisToken ==null){
//            System.out.println("token已过期"+url);
//            response.setStatusCode(HttpStatus.UNAUTHORIZED);
//            return response.setComplete();
//        }
//        if(!token.equals(redisToken)){
//            System.out.println("token错误"+url);
//            response.setStatusCode(HttpStatus.UNAUTHORIZED);
//            return response.setComplete();
//        }
//        //token续期
//        stringRedisTemplate.expire(tokenKey,15, TimeUnit.MINUTES);
//
//        //放行
//        System.out.println("放行"+url);
//        return chain.filter(exchange);
//    }
//
//    @Override
//    public int getOrder() {
//        return 0;
//    }
//}
